Stable nitrogen isotope ratio-guided analysis of PCBs and PBDEs congener level biomagnification profiles

2009 Fiscal Year Final Research Report

• Project/Area Number: 19310024
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental impact assessment/Environmental policy
• Research Institution: Ehime University
• Principal Investigator: TAKEUCHI Ichiro Ehime University, 農学部, 教授 (30212020)
• Co-Investigator(Kenkyū-buntansha): KAWANO Masahide 愛媛大学, 農学部, 准教授 (50116927)
• Co-Investigator(Renkei-kenkyūsha): TAKADA Hideshige 東京農工大学, 大学院・共生科学技術研究院, 教授 (70187970)
• Project Period (FY): 2007 – 2009
• Keywords: 生態系評価 / 浅海域生態系 / PCBs / PBDEs / 窒素安定同位体 / 生物濃縮特性 / 食物連鎖

Research Abstract

Biomagnification profiles of PCBs and PBDEs through shallow water ecosystems around Japan were analyzed by congener level using nitrogen stable isotope ratios as guides to trophic structure. About 130 to 155 PCB congeners were detected in half of the biological samples collected from shallow water ecosystems of western Japan. For these PCB congeners, degree of biomagnification on a wet weight basis exceeded that on a lipid weight basis. For each PCB congener level, the degree of biomagnification increased with increasing chlorination substitution up to about 6 chlorine numbers; the degree of biomagnifications did not increase thereafter at higher chlorination substitution numbers. The degree of PBDE congener biomagnification was lower than that of PCB congener with same degree of lipophilicity.

Research Products

• [Journal Article] Bioconcentration and biomagnification of polybrominated diphenyl ethers (PBDEs) through lower-trophic-level coastal marine food web (2009)
  • Author(s): Mizukawa K, Tadata H, Takeuchi I, Ikemoto T, Omori K, Tsuchiya K.
  • Journal Title: Marine Pollution Bulletin Vol.58(in press) Pages: 1217-1224
  • Peer Reviewed
• [Journal Article] Stable isotope-guided analysis of congener-specific PCB concentrations in a Japanese coastal food web (2009)
  • Author(s): Matsuo H, Kawano M, Omori K, Nakajima K, Takeuchi I.
  • Journal Title: Marine Pollution Bulletin Vol.58 Pages: 1615-1623
  • Peer Reviewed
• [Presentation] Biomagnification profiles of dioxin-like PCBs in the predator-prey relationship between sand lance and sea bass in the Seto Inland Sea, Japan (2010)
  • Author(s): atsuo H, Shiki Y, Kawano M, Omori K, Matsuda M, Morita M, Takeuchi I.
  • Organizer: First International Conference on Environmental Pollution, Restoration, and Management, Ho Chi Minh City, Vietnam
  • Year and Date: 2010-03-03
• [Presentation] 九州西岸域の浅海域生態系におけるPCBsの生物濃縮特性の解析 (2009)
  • Author(s): 松尾広暁、河野公栄、松田宗明、森田昌〓、竹内一郎
  • Organizer: 環境ホルモン学会第12回研究発表会
  • Place of Presentation: 東京都
  • Year and Date: 2009-12-08
• [Presentation] Congener-specific concentration of PCBs through the food web in the Sargassum community of the Seto Inland Sea, Japan (2008)
  • Author(s): Matsuo H, Kawano M, Ikemoto T, Omori K, Matsuda M, Morita M, Takeuchi I.
  • Organizer: 5th SETAC World Congress
  • Place of Presentation: Sydney, Australia
  • Year and Date: 2008-08-05
• [Presentation] 臭素化ジフェニルエーテル(PBDEs)の沿岸域生態系における生物濃縮経路と傾向の解明 (2008)
  • Author(s): 水川薫子、高田秀重、池本徳孝、松尾広暁、竹内一郎、土屋光太郎
  • Organizer: 第17回環境化学討論会
  • Place of Presentation: 神戸
  • Year and Date: 2008-06-11